Using your 430/580 outside in bright sunlight will not work with a beauty dish. These strobes don't have enough light for anything but headshots when using diffusion with bright sunlight. Shoot straight flash for maximum power. You'll be surprised how nice the light looks with straight flash - Set one flash high to the side on top of an 8-foot light stand, with the other flash on-camera for fill.
Over more than 35 years of shooting strobe in the "synchro-sun" technique (yes, I'm using a term from waaaay back!) I've used every combination of lighting outdoors, and continually come back to straight flash. Don't think you need complicated setups for beautiful images! Keep it simple and you'll do just fine.
Try it, you'll like it!
- PS - plain old 8-foot lightstand, which holds itself up and doesn't require lots of helpers - keep it simple!